Software & Design

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MWJ July Puzzler


5 An iterative process of selectively refining the finite element mesh based on the results from a previous solution (2 words)
11 Radio in which some or all of the physical layer functions are software defined (3 words)
12 A class of methods for converting a continuous operator problem (such as a differential equation) to a discrete problem
14 Modulation technique that works by splitting the radio signal into multiple smaller sub-signals that are then transmitted simultaneously at different frequencies
15 A scalar for which there exists a nonzero vector such that the scalar times the vector equals the value of the vector under a given linear transformation on a vector space
16 Receive constellation error (3 words)
17 A grid-based differential time-domain numerical modeling method, which can be traced back to a seminal 1966 paper by Kane Yee in IEEE Transactions on Antennas and Propagation
18 Iterative method for solving a system of linear equations that derives approximations to the solution by minimizing the residual over the subspace formed (2 words)
20 A method used to calculate the steady-state frequency response of high-frequency electrical circuits, which include nonlinear and passive distributed elements (2 words)
21 A text-based file that describes the connectivity of an electronic design
23 An operation that transforms the time domain information into the frequency domain (2 words)
24 A software standard for SDR that is proliferating beyond the original JTRS program into other programs around the world (3 words)


1 A widely used bipolar junction transistor model originally developed in 1970 and frequently used to model HBTs (hyphenated)
2 System simulation engine co-developed by HP and UC Berkeley, which facilitates co-simulation of time, frequency and data flow technologies
3 An agency of the United States DoD responsible for the development of new technology for use by the military, responsible for funding the MIMIC program
4 A method of combining two amplitude-modulated (AM) signals into a single channel (3 words)
6 Two-dimensional arrays of periodic resonant elements that interact with EM waves within certain frequency band(s) (3 words)
7 Factorization of a matrix into some canonical form, used for solving complex systems of linear equations (2 words)
8 A hardware description language (HDL) used to model electronic systems (2 words)
9 Most frequently cited phase noise model
10 Type of function used to solve inhomogeneous differential equations subject to boundary conditions (2 words)
13 A type of simulation for high-frequency amplifiers, mixers, oscillators and subsystems that involves transient or modulated RF signals, introduced with HP-EEsof ADS (2 words)
19 The "A" in API, the programming interface (API) implemented by a software program that enables it to interact with other software
20 Practice of splitting the design into pieces, each piece becoming a "definition" that can be used as instances in the design; complex designs are often composed of these pieces known as sub-circuits
22 Determines whether the physical layout of a particular chip layout satisfies a series of recommended manufacturing parameters, a major step during physical verification signoff


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